EP2921771B1 - Leuchtmodul für kraftfahrzeug - Google Patents

Leuchtmodul für kraftfahrzeug Download PDF

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Publication number
EP2921771B1
EP2921771B1 EP15159807.5A EP15159807A EP2921771B1 EP 2921771 B1 EP2921771 B1 EP 2921771B1 EP 15159807 A EP15159807 A EP 15159807A EP 2921771 B1 EP2921771 B1 EP 2921771B1
Authority
EP
European Patent Office
Prior art keywords
light
light guide
guide
face
module according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP15159807.5A
Other languages
English (en)
French (fr)
Other versions
EP2921771A1 (de
Inventor
Damien Cabanne
Alberto Rodríguez Fuentes
José Antonio Aguilar del Moral
José Castillo Jiménez
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Iluminacion SA
Original Assignee
Valeo Iluminacion SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Publication of EP2921771A1 publication Critical patent/EP2921771A1/de
Application granted granted Critical
Publication of EP2921771B1 publication Critical patent/EP2921771B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0063—Means for improving the coupling-out of light from the light guide for extracting light out both the major surfaces of the light guide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/0029—Spatial arrangement
    • B60Q1/0041—Spatial arrangement of several lamps in relation to each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
    • F21S41/148—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • F21S41/334—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors
    • F21S41/336—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors with discontinuity at the junction between adjacent areas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/14—Light emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/19—Attachment of light sources or lamp holders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/19—Attachment of light sources or lamp holders
    • F21S43/195—Details of lamp holders, terminals or connectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/236—Light guides characterised by the shape of the light guide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/236—Light guides characterised by the shape of the light guide
    • F21S43/237—Light guides characterised by the shape of the light guide rod-shaped
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/236—Light guides characterised by the shape of the light guide
    • F21S43/241—Light guides characterised by the shape of the light guide of complex shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/242—Light guides characterised by the emission area
    • F21S43/245—Light guides characterised by the emission area emitting light from one or more of its major surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/247—Light guides with a single light source being coupled into the light guide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/249—Light guides with two or more light sources being coupled into the light guide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/27—Attachment thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
    • F21S43/31—Optical layout thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/40—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the combination of reflectors and refractors
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
    • G02B1/045—Light guides
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0055—Reflecting element, sheet or layer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2103/00—Exterior vehicle lighting devices for signalling purposes
    • F21W2103/55—Daytime running lights [DRL]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles

Definitions

  • the present invention relates to the field of lighting and / or signaling of a motor vehicle and more particularly relates to the design of light modules capable of emitting daytime running lights.
  • daytime running lights a device also known by the English acronym DRL for "Daytime Running Light”
  • DRL Daytime Running Light
  • the daytime running light function must meet regulatory standards, in particular in this case standards relating on the one hand to photometry and on the other hand to the surface. minimum lighting.
  • the intensity and direction of the light rays emitted by the daytime running lights should be correctly calibrated and, on the other hand, the surface area used to perform this daytime running light function should be greater. at a minimum regulatory threshold.
  • the document FR2813654 discloses a device with a collector under which passes a light guide, from which rays emerge from a first face and towards the front and rays emerge from a second face and towards the rear in the direction of the collector.
  • the present invention falls within this context, and it proposes a light module comprising a support means of at least one collector of light rays, emitted by a primary light source, in the vicinity of which is disposed a light guide capable of guiding the light rays.
  • rays emitted by a secondary light source from an entry face to at least two distinct and adjacent exit faces.
  • An exit face is thus provided main, through which the rays pass in a first direction, and at least one additional exit face adjacent to the main exit face, and therefore not parallel thereto, so that it is oriented so that the light rays leaving the guide through this additional face are directed towards the collector, in a second direction distinct from the first direction.
  • the object of the invention is according to claim 1.
  • collectors which can moreover be used for the reflection of light rays emitted by a primary light source of their own, since the light guide is clear of the field of reflection of the rays.
  • collectors It is understood that it is by the fact that the additional output face is adjacent to the main output face, and therefore not parallel to the latter, that the guide can have its own optical function and also use the collectors neighbors, without hindering the optical function performed elsewhere by the collectors.
  • the support means carries two collectors capable of deflecting the light emitted by a primary light source respectively associated with each of the collectors substantially parallel to the optical axis.
  • an additional optical system arranged between the collectors and which comprises a secondary light source capable of emitting rays into the light guide, the light guide comprising three exit faces, among which a substantially main exit face. perpendicular to the optical axis and two additional opposite output faces and respectively oriented towards each of the collectors.
  • the invention also relates to a motor vehicle in which a light module as described above is installed for lighting and / or signaling the motor vehicle.
  • the longitudinal direction L will denote the direction in the direction of travel of the motor vehicle, and the transverse direction T a horizontal direction and perpendicular to this longitudinal direction.
  • the vertical direction V will denote the direction perpendicular to the previous two, which furthermore define a horizontal plane.
  • the trihedron L, V, T is placed on the figures to facilitate reading. But it will be understood that the light module can be arranged in another orientation without departing from the context of the invention.
  • a light module 2 comprises a support means 4 on which are attached at least one primary light source, here not shown, and at least one elliptical collector 6 adapted to reflect the rays emitted by the primary light source which is associated with it in the direction of an optical element carried by the support.
  • the optical element is disposed at the second focal point of the elliptical collector while the primary light source must be disposed substantially at the first focal point of the collector, in line with the clearance formed in the support. This arrangement allows the majority of the rays emitted by the primary light source and passing through the second focal point of the collector to be reflected by the optical element in the direction of illumination corresponding to its optical axis.
  • These primary light sources emit directly into the collector and provide high beam or low beam lighting functions when they are on, automatically or by manual control by the driver.
  • the module further comprises at least one additional optical system 8, arranged in the vicinity of the collector (s), and this optical system performs the function of daytime running lights, on when the main beam lighting functions and crossing are extinct.
  • the additional optical system comprises a secondary light source 10, capable of emitting light in a light guide carried by a plate made integral with the means of the support of the light module.
  • This additional optical system is particularly suitable for guiding the light emitted by the secondary light source towards at least two distinct exit faces.
  • the module comprises two collectors attached to the support means.
  • Each collector has a substantially elliptical reflecting surface, which can be produced in the form of an angular sector of a part of substantially revolution. It may however be noted that the surface may not be perfectly elliptical and have several specific profiles provided for optimizing the light distribution in the lighting beam produced by the module, as illustrated in the figures.
  • the two collectors are here arranged so that their respective second focus is substantially coincident at a point where the focus of the optical element is placed.
  • the two collectors are attached to the support means 4 so as to be arranged side by side in the transverse direction, leaving an intermediate zone 12 which extends between the two collectors 6.
  • the intermediate zone comprises in the upper part a bearing surface 14 substantially flush with the collectors and in the lower part a housing 16 hollowed out longitudinally.
  • the support means has on its upper wall a groove 18 which longitudinally extends the bearing surface of the intermediate zone.
  • the intermediate zone has dimensions suitable for receiving the additional optical system 8, comprising, as described above, a light guide 20 and a fixing plate 22.
  • the fixing plate comprises in the rear part, thus defined arbitrarily with respect to the orientation of the trihedron chosen in the figures, an anchoring zone 24 in the module, able in particular to penetrate into the housing formed in the intermediate zone between the collectors, and in the front part a fixing zone 26 of the light guide 20, to keep the latter in position both with respect to the collectors and with respect to the secondary light source, which is brought opposite the fixing plate .
  • the anchoring zone 24 here has an upper part 28, the rear face of which, curved, is able to follow the curved shape of the intermediate zone, and a lower part 30 which is substantially straight.
  • the upper part is hollowed out in its center for questions of weight and design, this part of the plate being visible when the plate is brought up against the intermediate zone between the collectors (as it is visible on the figure 1 ).
  • the anchoring zone carries two fixing elements by snap-fastening into the support means.
  • a male element 32 having the shape of a plug, is formed projecting from the lower part 30, facing away from the fixing plate and the associated light guide, and this male fixing element is adapted to be plugged into a socket 34 provided in the housing 16 formed in the lower part of the intermediate zone 12.
  • a female element in the form of an eyelet 36, is adapted to engage around a vertical pin 38 provided for this effect in the central groove 18 of the support means. It is observed that the male fixing element in the lower part is plugged in in a longitudinal direction perpendicular to the direction in which the eyelet is fitted around the pin. Thus, the mounting plate is locked in all three directions of space and provides a stable support for the light guide.
  • the fixing zone of the light guide is disposed longitudinally in front of the anchoring zone. It has a support face 40 formed by the front face of the anchoring zone, extended at its upper vertical end by a longitudinal tab 42 which stops the guide in vertical position and which has a dropped edge 44 at its free end. , which ensures a longitudinal maintenance of the guide.
  • the flanged edge may include on its internal face, turned towards the inside of the fixing zone, a lug, here not visible, which occasionally reduces the distance between the support face and the flanged edge.
  • the support face has the appropriate curvature so that the light guide bears against this support face over its entire height.
  • the support face is extended at its lower vertical end by a substantially U-shaped receiving cup, a first wing 48 of which is formed by the lower end of the support face, the bottom wall 50 of which extends perpendicularly to the first. wing projecting from the support face, and the second wing 52 of which is formed by a return wall which extends substantially perpendicularly to the bottom wall.
  • a light 54 is arranged in the back wall to allow the diffusion of light by the light source to pass, the back being disposed between the light source and the light guide.
  • the bottom wall comprises on its outer face, facing away from the receiving cup, indexing studs 55 capable of cooperating with complementary indexing holes formed on the light source.
  • the cuvette further comprises first elements cooperating with second elements carried by the light guide to ensure that this guide is held in transverse position in the fixing plate.
  • first cooperating elements include in particular a transverse guide rail 58 and a stop 59 disposed at the end of this ramp, integrally formed with the first wing of the cup, as well as a tenon extending longitudinally inside the cup. and integral with the second wing (and not visible in the figures).
  • the return wall formed by the second wing 52 of the cuvette ensures the longitudinal retention of the lower part of the light guide 20.
  • the light guide 20 has a tubular shape of square section, with four sides and two opposite bases which extend substantially horizontally when the guide is in place in the housing, and which will be called the lower base and the upper base depending on their positioning in the home in the orientation chosen arbitrarily.
  • the light guide is made of a transparent material such as polymethyl methacrylate (also defined by the abbreviation P.M.M.A) capable of being passed through by light. It comprises an input face arranged opposite the light source and a plurality of output faces by which the light rays, guided inside the guide 20 by successive internal reflection, are refracted.
  • P.M.M.A polymethyl methacrylate
  • the entry face is formed by the lower base, opposite which is placed the light source 10.
  • the entry face may have the shape of a collimator to facilitate the routing of light rays inside the light guide.
  • a main output face 64 is opposite the contact face and two additional output faces 66 (only one being visible, whether on the figure 1 , 2 or 3 ) respectively connecting a transverse end of the main outlet face 64 and the corresponding transverse end of the contact face 62 so that they are each adjacent to the main outlet face 64. It is therefore notable that these outlet faces additional extend in a plane not parallel to the plane in which extends the main exit face. It can be seen that the main exit face is thus oriented to emit rays substantially parallel to the optical axis of the vehicle, and that the additional exit faces are oriented so that the light rays brought out of the guide through them are directed. to collectors.
  • the additional outlet faces are more particularly substantially perpendicular to the main outlet face and to the contact face, so that the light guide has, in a longitudinal and transverse section plane, a substantially rectangular shape.
  • the main outlet face 64 is provided with tori taking the form of pads, and otherwise known under the English name of “pillow”, while the additional outlet faces 66 are provided with prismatic elements.
  • the first type of optical coating made of pads allows a strong refraction of the light rays impacting the face of the corresponding guide, for the distribution and bursting of the light beam at the output
  • the second type of coating also makes it possible to refract the light in the direction of the collectors towards which the face of the corresponding guide is turned than to internally reflect the light rays towards the main exit face.
  • the prisms are arranged according to a curvature suitable for guiding the light mainly towards the main exit face, and that it is a small part of the light rays which pass through the additional exit faces to illuminate the collectors.
  • Such prismatic elements can also be provided on the contact face to reflect and diffract the rays traveling in the guide.
  • the presence of the support face of the fixing plate facing the contact face of the light guide makes it possible to prevent the diffusion of light rays exiting from the guide at the level of the contact face.
  • the contact face advantageously has a frame 70 which follows the curvature of the support face of the plate on which the guide rests, and which surrounds a central part 72 provided with prisms whose curvature seen from the rear of the guide is distinct of that of the frame.
  • a notch 74 is made at the top of the front face, on a strip 76 devoid of "pads” and essentially intended to ensure the maintenance in position of the guide, said notch being able to cooperate with the lug made on the internal face of the edge. dropped when the light guide is inserted into the mounting plate.
  • a tab 77 is provided on the contact face of the guide, of height equal to the center distance between the guide rails provided on the fixing plate.
  • a mortise 78 is also provided on the front face of the guide capable of cooperating, when the guide is in place in the plate, with the tenon integral with the second wing and mentioned above.
  • the light rays emitted in these two types of lighting come from the secondary light source, which is advantageously separate from the primary light sources, so that it alone performs the function of daytime running lights.
  • the secondary light source is fixed on the support means facing the entry face of the light guide.
  • the secondary light source is attached under the support means, the source then being able to emit upwards.
  • the light source is a light-emitting diode carried by a printed circuit board 82 and capable of emitting light rays as a function of an electrical control instruction. It will be understood that other types of light sources could be used without departing from the context of the invention.
  • indexing holes are made in the printed circuit board, of diameter substantially equal to the diameter of the indexing pads 55 carried by the mounting plate, on the outer face of the bottom wall of the bowl. It is thus ensured, by the cooperation of these indexing means carried by the carrier plate of the diode and by the carrier plate of the light guide, that the position of the guide relative to the light source is correct so that the rays light enter conformally through the entry face of the light guide.
  • the light guide is mounted on the fixing plate, and for this purpose the guide is inserted laterally in the fixing zone, so that the top of the guide fits between the support face and the flanged edge of the attachment area and so that the lower part of the guide fits into the receiving cup, between the first wing and the second wing.
  • the guiding is facilitated by the cooperation of the tongue in the rails until it meets the stop.
  • the light guide is then locked in the three positions of the space by the fixing plate.
  • the guide can be removed from the plate by sliding it on the same side, forcing to disengage the tenon and the mortise.
  • the guide is fixed in position in a non-removable manner when the fixing plate is attached to the support means of the collector.
  • the anchoring zone is pressed against the intermediate zone arranged between the two manifolds, by bringing the fixing plate vertically so that the lower part of the anchoring zone penetrates into the housing, then by pushing it longitudinally against the intermediate zone so as to plug the male fixing element of the anchoring zone into the socket provided in the housing.
  • the printed circuit board is then mounted, on which the secondary light source has been placed.
  • the position of this plate is indexed by the cooperation of the holes that it bears with the indexing pins carried by the fixing plate and projecting under the collecting means, and the plate is fixed by screwing on the support means. in this indexed position.
  • the secondary light source is placed correctly with respect to the input face of the light guide.
  • the emitted light penetrates the guide and is directed mainly vertically, in the direction of the upper base of the guide against which all the rays are returned into the guide by total internal reflection.
  • the rays directed towards the front face come out by refraction, facilitated by the optical forms in pads, to perform the function of daytime running lights in the optical axis.
  • the rays directed towards the rear face are advantageously reflected towards the main exit face, so that the photometric quality of the daytime running lights is increased, and some of these rays can be directed towards the side faces, which form the additional exit faces so that light can be refracted towards the collectors opposite which they respectively extend.
  • the lighting surface is thus increased since the light does not come out only through the main exit face, the impression given that it is the entire surface covered by the collectors which participate in the daytime running light function.
  • the light guide is shaped so that a small amount of light escapes from the sides and illuminates the collectors arranged alongside, which then have a second function, in addition to their primary function of deflecting the light emitted by primary light sources for high beam and low beam function.
  • the photometry is treated separately on the one hand, provided by the light rays exiting through the main exit face, on which the light is initially focused and through which the light rays exit mainly parallel to the optical axis, and the extent of the illumination surface on the other hand, obtained by the rays coming from the main exit face and by the reflection of the rays in the collector.
  • the minimum illumination surface is respected, whereas it would not be by illumination of the main exit face alone, chosen smaller for design reasons in particular.
  • the diode could then be housed in the recessed part of the anchoring zone.
  • the arrangement of the light module according to the invention is also advantageous when the main beam and dipped beam headlights are working and the daytime running lights are in fact off.
  • the narrowness of the light guides associated with the daytime running lights do not interfere with the lighting by the collectors in their main function. Compactness is facilitated without penalizing the performance of the various lighting functions.
  • the light guide 120 is no longer in one piece with a substantially straight tube which extends vertically, but it comprises two parts among which a substantially parallelepiped head 84 and a body 86 formed by a tube which extends longitudinally. .
  • the tube has a free end 88 forming an inlet face 160 of the lumen and which opens into the head, which has, similarly to the previous embodiment, three outlet faces.
  • the main outlet face 164 is arranged in the axial extension of the tube, and as before the additional outlet faces 166 (again, only one additional outlet face is visible on the figures 4 and 5 ) are each adjacent to the face main outlet 164, respectively extend in a plane not parallel to the plane in which the main outlet face extends. As illustrated in the figures by way of example, these additional outlet faces 166 can be arranged substantially perpendicular to the main outlet face.
  • the exit faces are provided with bearings and prismatic elements in a manner similar to that of the first embodiment.
  • the particular shape of the light guide implies a different arrangement of the secondary light source and the presence of an intermediate fairing 90 between the mounting plate 122 and the light guide 120.
  • the secondary light source which is not visible on the figures 4 and 5 , is carried by the mounting plate, so as to be located opposite the entry face of the light guide.
  • the shape of the fixing plate is itself also modified in that it does not have the form of a box open towards the front to receive the light guide and covered at the level of this opening by the intermediate fairing.
  • the light source is therefore fixed to the back wall, opposite the opening of the plate.
  • the fixing plate comprises an anchoring zone carrying snap-fastening means capable of securing the plate to the support means between the manifolds, and a fastening zone able this time to cooperate with the intermediate fairing and not directly with the light guide.
  • the intermediate fairing 90 comprises a vertical bar 92 capable of being snapped onto the fixing plate to cover the opening, the bar being cut at mid-height by a receiving portion 94 of shape corresponding to the shape of the head of the guide. from light.
  • the operation of the assembly is similar to that described above, the light being able to exit the light guide mainly via the exit face disposed transversely to the optical axis, and more randomly via the additional lateral exit faces for lighting of collectors. It is observed that here the secondary light source is arranged so that the light rays that it emits are directly targeted towards the main exit face.
  • orientation and the type of the means for anchoring the fixing plate in the support means may differ without departing from the context of the invention.
  • the module comprises two collectors. It will be understood that the description can be read without particular difficulty by applying it to a module in which there are more than two collectors, at least one additional optical system being provided between two neighboring collectors.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mechanical Engineering (AREA)
  • Planar Illumination Modules (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Claims (14)

  1. Leuchtmodul (2) zur Beleuchtung und/oder Signalisierung eines Kraftfahrzeugs, beinhaltend eine optische Achse und ein Halterungsmittel (4) zum Haltern mindestens eines Kollektors (6) für Lichtstrahlen, die von einer Primärlichtquelle ausgesandt werden, in dessen Nähe ein Lichtleiter (20) angeordnet ist, der geeignet ist, die von einer Sekundärlichtquelle (10) ausgesandten Strahlen von einer Eintrittsfläche zu mindestens zwei verschiedenen Austrittsflächen zu leiten, darunter eine Hauptaustrittsfläche (64), durch die hindurch die Strahlen entlang einer ersten Richtung verlaufen, und mindestens eine zusätzliche Austrittsfläche (66), die so ausgerichtet ist, dass die aus dem Leiter durch diese zusätzliche Austrittsfläche hindurch austretenden Lichtstrahlen zum Kollektor hin gerichtet werden, entlang einer zweiten Richtung, die von der ersten Richtung verschieden ist, wobei die mindestens eine zusätzliche Austrittsfläche (66) an die Hauptaustrittsfläche angrenzt,
    dadurch gekennzeichnet, dass das Halterungsmittel (4) zwei Kollektoren (6) trägt, die geeignet sind, das von einer jeweils jedem der Kollektoren zugeordneten Primärlichtquelle ausgesandte Licht im Wesentlichen parallel zur optischen Achse abzulenken, sowie ein zusätzliches optisches System (8), das zwischen den Kollektoren angeordnet ist und das die Sekundärlichtquelle (10) beinhaltet, die geeignet ist, Strahlen in den Lichtleiter (20; 120) auszusenden, wobei der Lichtleiter drei Austrittsflächen umfasst, darunter eine Hauptaustrittsfläche (64; 164), die im Wesentlichen senkrecht zur optischen Achse verläuft, und zwei entgegengesetzte und jeweils zu jedem der Kollektoren hin ausgerichtete Sekundäraustrittsflächen (66; 166).
  2. Leuchtmodul nach Anspruch 1, dadurch gekennzeichnet, dass die mindestens eine zusätzliche Austrittsfläche im Wesentlichen senkrecht zu der Hauptaustrittsfläche verläuft.
  3. Leuchtmodul nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Lichtleiter (20) aus einem Material ausgeführt ist, das geeignet ist, vom Licht durchquert zu werden, wie einem transparenten Material, insbesondere Polymethylmethacrylat oder Polycarbonat.
  4. Leuchtmodul nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Hauptaustrittsfläche (64) und/oder die zusätzlichen Austrittsflächen (66) Toroide, welche die Form von Kissen annehmen, prismatische Elemente, Riefen oder eine Aufrauhung umfassen.
  5. Leuchtmodul nach Anspruch 4, dadurch gekennzeichnet, dass die Hauptaustrittsfläche (64) mit Toroiden versehen ist, die die Form von Kissen annehmen.
  6. Leuchtmodul nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass die zusätzlichen Austrittsflächen (66) mit prismatischen Elementen versehen sind.
  7. Leuchtmodul nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Lichtleiter (20) und die Sekundärlichtquelle (10) jeweils an dem Halterungsmittel (4) so befestigt sind, dass die Sekundärlichtquelle gegenüber der Eintrittsfläche des Lichtleiters angeordnet ist.
  8. Leuchtmodul nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Lichtleiter (20) am Halterungsmittel (4) über eine Befestigungsplatte (22) befestigt ist.
  9. Leuchtmodul nach Anspruch 8, dadurch gekennzeichnet, dass die Befestigungsplatte (22) einen Verankerungsbereich (24), der Befestigungsmittel zum Befestigen der Platte am Halterungsmittel (4) trägt, sowie einen Befestigungsbereich zum Befestigen (26) des Lichtleiters beinhaltet.
  10. Leuchtmodul nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass es ein eine Zwischenverkleidung (90) bildendes Element beinhaltet, das zwischen der Platte (122) und dem Lichtleiter (120) angeordnet ist.
  11. Leuchtmodul nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass sich der Lichtleiter (20) im Wesentlichen über die gesamte Höhe des Kollektors erstreckt und eine Röhrenform annimmt, wobei die Sekundärlichtquelle (10) unter dem Kollektor (6) gegenüber der an einem axialen Ende des Leiters gebildeten Eintrittsfläche des Lichtleiters angeordnet ist, und dadurch gekennzeichnet, dass das zusätzliche optische System (8) ferner eine Befestigungsplatte (22) beinhaltet, über die der Lichtleiter am Halterungsmittel (4) befestigt ist.
  12. Leuchtmodul nach Anspruch 11, dadurch gekennzeichnet, dass die Befestigungsplatte (22) einen Verankerungsbereich (24), der Befestigungsmittel zum Befestigen der Platte am Halterungsmittel trägt, sowie einen Befestigungsbereich zum Befestigen (26) des Lichtleiters beinhaltet.
  13. Leuchtmodul nach Anspruch 12, dadurch gekennzeichnet, dass der Befestigungsbereich (26) so gestaltet ist, dass er das Einsetzen des Lichtleiters (20) seitlich in die Befestigungsplatte (22) ermöglicht, und dass er Rastmittel aufweist, die mit komplementär ausgebildeten Rastmitteln zusammenwirken, die vom Lichtleiter getragen werden, um Letzteren in der Befestigungsplatte in der Position zu halten.
  14. Leuchtmodul nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass sich der Lichtleiter (120) im Wesentlichen auf halber Höhe des Kollektors erstreckt und einen Kopf (84) beinhaltet, der Austrittsflächen (164, 166) trägt, und einen röhrenförmigen Körper (86), der den Kopf im Wesentlichen entlang der optischen Achse verlängert, wobei die Lichtquelle gegenüber der Eintrittsfläche (160) angeordnet ist, die an dem zum Kopf entgegengesetzten Ende des Körpers angeordnet ist, und dadurch gekennzeichnet, dass das zusätzliche optische System ferner eine Befestigungsplatte (122), über die der Lichtleiter am Halterungsmittel befestigt ist, und eine Zwischenverkleidung (90) beinhaltet, wobei die Zwischenverkleidung geeignet ist, den Lichtleiter zu tragen und an der Platte befestigt zu werden, die wiederum am Halterungsmittel befestigt ist.
EP15159807.5A 2014-03-20 2015-03-19 Leuchtmodul für kraftfahrzeug Active EP2921771B1 (de)

Applications Claiming Priority (1)

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FR1452340A FR3018896B1 (fr) 2014-03-20 2014-03-20 Module lumineux pour feu diurne de vehicule automobile

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EP2921771B1 true EP2921771B1 (de) 2021-07-28

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EP (1) EP2921771B1 (de)
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USD887591S1 (en) * 2017-07-21 2020-06-16 GM Global Technology Operations LLC Daytime running light
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JP7414833B2 (ja) * 2019-08-27 2024-01-16 株式会社小糸製作所 車両用前照灯
FR3109427A1 (fr) * 2020-04-15 2021-10-22 Psa Automobiles Sa Glace destinée à obturer un boîtier optique pour véhicule automobile, comprenant une cloison et au moins un guide de lumière

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Also Published As

Publication number Publication date
FR3018896A1 (fr) 2015-09-25
CN104930429A (zh) 2015-09-23
US9766393B2 (en) 2017-09-19
FR3018896B1 (fr) 2018-05-18
EP2921771A1 (de) 2015-09-23
US20150268406A1 (en) 2015-09-24
CN104930429B (zh) 2019-06-18

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